Ron,
Added to all the good word you have by now, if you don't have a goat to bash around for a three-line trainer, you might do well with a SIG Skyray 35.
It is a pretty sturdy design, and if the fancy takes you, there is a Class of Skyray Carrier. Some places, Some times. The Carrier forum in here might give you some ideas on that... Might not, I haven't looked in there for a while...
Three-line flight is a lot of fun by itself! Scale models, sometimes, tend to be touchy and fragile fliers. It might be an idea to master the mechanics of controlling them (handle, lines throttle bellcrank) before you are challenged by a more tricky model to handle.